Patents by Inventor Gerhard Warner

Gerhard Warner has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Printing ink binder
    Patent number: 4079102
    Abstract: A modified hydrocarbon resin comprising (A) a major amount of a cycloaliphatic diene resin component and (B) a minor amount of an olefinically unsaturated polycarboxylic acid component, wherein at least 5% of the carboxyl groups are esterified with an alcohol selected from the group consisting of (a) a monohydric, (b) a dihydric alcohol and (c) a combination of (a) and (b), a process for its preparation and a printing ink composition containing said modified hydrocarbon resin.
    Type: Grant
    Filed: July 13, 1976
    Date of Patent: March 14, 1978
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Reinhard Wagner, Gerhard Warner, Hans-Jurgen Tietz